Improvement in pumps and engines



G. F. BLAKE, Pumpsand Engines.

Naw-4,010. ParemedAug.H,1874.

IIIIII I IIIIIIIIIIH I mllmllllllll mwfimvu MII THE GRAPHIC CO.FHCYC`LITHVSS8 4l PARK PLACE, N.Y.

lUNITED STATES GEORGE F. BLAKE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO GEO PATENT OFFICE.

BLAKE MANUFACTURING COMPANY, OF SAME PLACE.

IMPROVEMENT IN PUMPS AND ENGINES.

Specification forming part of Letters Patent No. l 54,010, dated August 11, 1874; application tiled May 1e, 1874.

GAsE B.

To all whom it may concern:

Be it known that I, GEORGE F. BLAKE, of Boston, county of Suffolk and "State of Massachusetts, have invented an Improvement in Pumps and Engines, of which the following is a specification: Y

. This invention relates to an improvement in` detachable cylinder for pumps and engines; and consists in enlarging the ange of the detachable cylinder so as to give it a width suf'- iicient to cover the passages leading to the steam or Water valves, in forming the steam or water ports through said enlarged flange of the cylinder, and in holding the cylinder in place relatively to the casing by means of a bonnet bolted to the ange and casing, as hereinafter described. u

The drawings represent the invention in two forms. Figure l shows the manner of constructing' the cylinder and flange in pumps or engines, in which the suction and discharge Figure 2 shows,

valves have separate ports.

their construction in cases where the same port is used for both suction and discharge.

In these drawings, A marks the detachable cylinder, B the enlarged flange of the cylinder, and C the bonnet which holds the cylinder in place by being bolted through ilange B to the casing.

It is obvious that the flange B forms a partition cutting o' communication between the two'ends of the cylinder.

By this construction of the flange the joint around the port is readily finished with the cylinder.

I claim- The combination, with the cylinder A, having the ports D, of the head or bonnet C, ar-

ranged to form the port or passage from the' cylinder, and to lfasten the cylinder in place, as set forth.

Witnesses:

THos. D. BLAKE, JOSEPH B. GARDINER.

GEO. E BLAKE.

RGE F. Y 

